HYDRAULIC OIL

Question: Where is the hydraulic oil used?  

Mitasu Oil Expert Help: Hydraulic oil is the working fluid in the hydraulic system the main function of which is transferring of forces from the hydraulic pump to hydraulic cylinders or hydraulic motors. The principle of the hydraulic system is transformation of a small effort to a much greater one due to the increase of pressure. This oil is used throughout the engineering, where there are hydraulic systems, particularly in construction and road equipment, excavators, bulldozers, cranes, forklifts, etc., as well as in airplanes, ships.  

Question: What are the requirements for hydraulic oil? 

Mitasu Oil Expert Help: The main problems of the hydraulics are associated with the quality of oil used in the system. Modern hydraulic oil should have the following characteristics: a high degree of purity, excellent filterability, resistance to oxidation, neutrality to the system materials, the oil must meet ever-specified performance in all conditions. High-quality hydraulic oil reliably protects the hydraulic system from corrosion and wear, thereby substantially reducing the operating costs of special equipment.  

Question: By what parameters is it possible to evaluate the quality of hydraulic oil? 

Mitasu Oil Expert Help: When selecting hydraulic oil first the attention should be paid to its ISO class, tolerances of automakers, viscosity index and pour point.  

Question: What does the viscosity index of hydraulic oil mean? 

Mitasu Oil Expert Help: Viscosity index of hydraulic oil is directly connected with the change of operating temperature; it must conform to the temperature regime of the hydraulic system. For the right selection of the desired viscosity index it is necessary to know the type of the hydraulic system pump. The choice depends on its ability to pump hydraulic oil in the system. The higher the viscosity index, the lower the viscosity of hydraulic oil at operating temperature variations. Hydraulic oils of Mitasu Oil Corporation, Japan have higher viscosity indexes in comparison with the analogues of other manufacturers. 

Question: Is the hydraulic oil exposed to oxidation, as well as the engine? 

Mitasu Oil Expert Help: Even small amounts of water in the system (0,05-0,1%) have a negative impact on the efficient operation of hydraulics. On heavy use of engine the oil temperature increases, which may cause the dissolution of the existing air in the system and, consequently, lead to oxidation of oil and even to a possible foaming. In this case oxidation products in the form of varnish deposits and sludge settle on the walls of the components of the hydraulic system, clogging the filter and the clearance of equipment, reducing the amount of transmitted power at the service equipment and breaking down the entire hydraulic system. 

Modern high-quality hydraulic oils contain a special package of antioxidant additives which are designed to neutralize the negative effects of oxidation on the hydraulics, thereby increasing the service life of hydraulic fluid and all components of the hydraulic system. Mitasu Hydraulic Oil has improved hydrolytic stability and a set of special anticorrosive, antifoaming additives of the world manufacturers. Thus, the use of Mitasu hydraulic oil prevents the formation of sludge and corrosion in hydraulic components.  

Question: Why the boiling point of hydraulic oil is important? 

Mitasu Oil Expert Help: Boiling of the hydraulic fluid greatly reduces the efficiency of a hydraulic system and may negatively affect the performance of separate elements of the hydraulics. Modern high-quality hydraulic oils are to ensure high purity of a hydraulic system at high operating temperatures and a longer service life of the working fluid. Mitasu Hydraulic Oil has a high boiling point and has high thermal stability. 

Question: What does the pour point of hydraulic oil mean? 

Mitasu Oil Expert Help: Low pour point of hydraulic oil allows operation of a hydraulic system over a wide temperature range. In particular, the Mitasu Hydraulic Oil has a pour point from -39 °C.